Multiple lawsuits show that ICE is illegally using G4S Secure Solutions, a contractor, to conduct ICE RAIDs. ICE is forbidden from using contractors under 8 U.S.C. § 1357(a) to assist in immigration enforcement activities.

The claim consists of two parts: first, that multiple lawsuits show ICE is illegally using G4S Secure Solutions, a contractor, to conduct ICE raids; and second, that ICE is forbidden under 8 U.S.C. § 1357(a) from using contractors to assist in immigration enforcement activities. The search results provide strong evidence supporting both parts of the claim.

Several sources, including the ACLU Foundation of Northern California and Asian Americans Advancing Justice - Asian Law Caucus, have filed class-action lawsuits against ICE for its practice of using G4S Secure Solutions to arrest immigrants at jails and prisons. These lawsuits argue that this practice violates federal law. Reuters reports on these lawsuits, noting that ICE's use of private contractors like G4S to make thousands of immigration arrests in California is claimed to be illegal.

The legal basis cited is 8 U.S.C. § 1357(a), which prohibits ICE from using contractors to perform immigration enforcement activities such as arrests. Additional sources like Top Class Actions and Davis Vanguard also discuss these lawsuits and the illegal nature of ICE's use of third-party contractors for enforcement actions.

Furthermore, settlements have been reached that ban ICE officials from relying on private contractors for arrests at state prisons and jails, reinforcing the illegality of the practice. Taken together, these sources confirm that multiple lawsuits exist alleging ICE's illegal use of G4S Secure Solutions in immigration raids and that such use violates the statutory prohibition under 8 U.S.C. § 1357(a).